that picture with the thin membrane looking tissue, it has folds down the length of it, which look like mucoid plaque that's taken on the shapes of the bowel wall, then released. if you wish to investigate further, you may be able to find more pictures to compare worm/mucoid plaque. dr anderson who wrote cleanse and purify yourself had pictures of mucoid plaque that takes on the shapes of the bowel wall like this.
what you are doing is causing whatever this is to leave and either way that is good.